The Review on Spectrophotometric Determination of Synthetic Food Dyes and Lakes

Industrialization of the food systems, including a rise in food processing, has increased the use of food additives such as food dyes, preservatives and sweeteners. Scientists have long been concerned that synthetic food dyes and other additives may contribute to hyperactivity and other disturbed behavior in children. The requirements of a satisfactory analytical method are usually manifold, but certainly selectivity is counted amongst the most important. Hence there has always been interest in procedures that can improve the sensitivity and selectivity of the measurement methods themselves. The purpose of this work is to present a review of some Spectrophotometric analytical methods like Derivative Spectrophotometry, H-Point Standard Addition Method (HPSAM), Cloud Point Extraction Method (CPE) to analyses water soluble (Direct dyes ) and water insoluble food dyes (lakes). Keywords: Derivative spectrophotometry, H-point standard addition method, and cloud point extraction